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Name
  Z And  
AAVSO UID
000-BCR-681 (64294 observations)  
Constellation
Andromeda Sequence
J2000.0
23 33 39.96 +48 49 06.0  (353.41650 +48.81833) Search nearby
B1950.0 23 31 15.35 +48 32 31.1
Proper motion
RA: -1.577 +/- 0.111 mas/yDec: -3.031 +/- 0.134 mas/ySource: Gaia DR1
Galactic coord. 109.979 -12.088
Other names

(Internal only)
1SWASP J233339.95+484905.9 1SXPS J233339.8+484903 2E 2331.6+4834
2E 4735 2MASS J23333994+4849059 2RXP J233339.7+484900
2SXPS 7969 2XMM J233339.9+484906 3XMMJ233339.9+484906
4XMM J233339.9+484906 AAVSO 2328+48 AN 41.1901
ASASSN-V J233340.09+484907.0 BD+48 4093 GALEX J233339.7+484904
GALEX J233339.8+484905 GSC 03645-02066 HD 221650
HIP 116287 HV 193 IRAS 23312+4832
MWC 416 NSVS 3569143 SAO 53146
TYC 3645-2066-1 WISE J233339.94+484906.0 WISEA J233339.95+484905.7
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Variability type
ZAND
Spectral type M2III+B1eq
Mag. range
7.7 - 11.3 V
Discoverer Williamina Paton Stevens Fleming (1901)
Epoch
--
Outburst --
Period 759 d
Rise/eclipse dur. --
Remarks
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1 Schmeer, Patrick Gaia DR3 parallax 0.487 ± 0.022 mas (distance 1.92 ± 0.08 kpc).
2 GCVS Team The light curve is characterized by outbursts up to 4m with intervals of 10 - 20 years. In the intervals cyclic variations are observed with the mean period of 632d and variations with cycles of several days and Delta(m) ~ 0.1m - 0.5m. The spectrum is symbiotic, with features of a late M giant, narrow low-excitation emission lines (Bleq) and forbidden lines characteristic of highly excited nebulae.
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References
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1 Dimitrov D., Popov V., 2007, Peremennye Zvezdy 27, 2 2007PZ.....27....2D
2 Fekel, F. C.; Hinkle, K. H.; Joyce, R. R.; Skrutskie, M. F., 2000, Infrared
spectroscopy of symbiotic stars. II. Orbits for five S-type systems with
two-year periods
2000AJ....120.3255F
3 J.A.Mattei, JRAS Can 72, N1, 61- 64, 1978. 1978JRASC..72...61M
4 Cannon, A. J., 1907, Second catalogue of variable stars 1907AnHar..55....1C
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Catalog Data
Information from selected catalogs obtained by cross-matching to 2 arc seconds using the CDS X-Match Service. These data may not be complete.
2MASS J = 6.19H = 5.29K = 4.89J - K = 1.30
AllWISE W1 = 4.60W2 = 4.40W3 = 4.09W4 = 3.48W1 - W2 = 0.20W3 - W4 = 0.61
SDSS-DR12 u = 12.10g = 11.11r = 9.47i = 8.70z = 8.81u - g = 0.99r - i = 0.77
Images
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Campaigns/Programs
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Revision History
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4 Schmeer, Patrick 2022-06-26 07:16 UTC Gaia DR3 position. Orbital period from 2000AJ....120.3255F. Discoverer's full name added.
3 Fernig, Leo 2022-04-22 13:37 UTC Discoverer updated from 1907AnHar..55....1C page 31
2 Admin, VSX 2010-01-05 04:43 UTC Update from the GCVS version of November 2009.
1 Admin, VSX 2005-12-18 01:33 UTC Initial upload.